The Phall-O-Meter, developed in the 1990s by the Intersex Society of North America (ISNA), was a satirical activism tool to highlight how doctors made subjective judgements about atypical genitalia then based their surgical advice on that analysis.

The Phall-O-Meter, developed in the 1990s by the Intersex Society of North America (ISNA), was a satirical activism tool to highlight how doctors made subjective judgements about atypical genitalia then based their surgical advice on that analysis.